Who has recently become the elected President of

19 × ? =361 ÷ 19

45 % of 180 + √144 * 8 = ?2  + 70 % of 80

?² = (1035 ÷ 23) × (1080 ÷ 24) 

(30 × 0.80)⁴ ÷ (2160 ÷ 60)⁴ × (54 × 16)⁴ = (6 × 4)^?+5

7(1/7)% of 3500 + 6(2/3) % of 6000 = ? + 552.5

35% of 840 + 16² = ? – 25% × 300

Find the simplified value of the given expression:

8 of 7 ÷ 2 × 5² + √36 – 10

 {(481  + 426) 2 - 4 × 481 × 426} = ?

`(450 -: ?)/(2.5 xx 1.2)` = 250

What will come in the place of question mark (?) in the given expression?

28 X 3.5 + 12 X 6 = ? X 4 + 90